GeForce GTX 285 1GB vs GeForce GTX 560 Ti 448

Intro

Compare those specifications to the GeForce GTX 560 Ti 448, which uses a 40 nm design. nVidia has set the core frequency at 732 MHz. The GDDR5 RAM is set to run at a speed of 900 MHz on this particular model. It features 448 SPUs as well as 56 Texture Address Units and 40 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 1GB		204 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 6 Watts (3%)

Memory Bandwidth

Performance-wise, the GeForce GTX 285 1GB should theoretically be a small bit better than the GeForce GTX 560 Ti 448 in general. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce GTX 560 Ti 448		144000 MB/sec
	Difference: 14976 (10%)

Texel Rate

The GeForce GTX 285 1GB will be quite a bit (about 26%) faster with regards to texture filtering than the GeForce GTX 560 Ti 448. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
GeForce GTX 560 Ti 448		40992 Mtexels/sec
	Difference: 10848 (26%)

Pixel Rate

The GeForce GTX 560 Ti 448 will be quite a bit (about 41%) more effective at AA than the GeForce GTX 285 1GB, and capable of handling higher resolutions better. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
GeForce GTX 285 1GB		20736 Mpixels/sec
	Difference: 8544 (41%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.